package homework;

class Fu {
    int num = 4;

    void show() {
        System.out.println("showFu");
    }
}

class Zi extends Fu {
    int num = 5;

    void show() {
        System.out.println("showZi");
    }
}

class T {
    public static void main(String[] args) {
        Fu f = new Zi();
        Zi z = new Zi();
        System.out.println(f.num);
        System.out.println(z.num);
        f.show();
        z.show();
    }
}